Ancient Golem Bug

Idk if I'm the only person to have this problem but it has happened to me twice now. I was jungling and when I went to get the blue buff, I couldn't damage it. It could attack me but I couldn't do anything to to harm it. The enemy team apparently had the same problem and neither team could get the blue buff.

It happened again a few days ago except it was a bit different. This time I could damage the ancient golem but it wouldn't fight back. It just sat there like nothing was happening. The lizards attacked though. And again, the enemy team had the same problem.

This can bring up some disadvantages if it happens again so I hope you read this Riot. Thank you.